﻿// Copyright (c) 2014 AlphaSierraPapa for the SharpDevelop Team
// 
// Permission is hereby granted, free of charge, to any person obtaining a copy of this
// software and associated documentation files (the "Software"), to deal in the Software
// without restriction, including without limitation the rights to use, copy, modify, merge,
// publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons
// to whom the Software is furnished to do so, subject to the following conditions:
// 
// The above copyright notice and this permission notice shall be included in all copies or
// substantial portions of the Software.
// 
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED,
// INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR
// PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE
// FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
// OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
// DEALINGS IN THE SOFTWARE.

using System;
using System.Collections.Generic;
using System.Linq;
using System.Reflection;
using ICSharpCode.NRefactory.TypeSystem;

namespace Debugger.AddIn.Visualizers.Graph
{
	/// <summary>
	/// Compares members - properties come before fields.
	/// </summary>
	public sealed class PropertiesFirstComparer : IComparer<IMember>
	{
		private static PropertiesFirstComparer instance = new PropertiesFirstComparer();
		
		public static PropertiesFirstComparer Instance {
			get { return instance; }
		}
		
		private PropertiesFirstComparer() {}
		
		public int Compare(IMember x, IMember y)
		{
			if ((x is IProperty) && (y is IField)) return -1;
			if ((x is IField) && (y is IProperty)) return 1;
			return x.Name.CompareTo(y.Name);
		}
	}
}
